I had a queen size waterbed in my guest room and king size waterbed in our master bedrooom. I had been planning on switching to regular mattresses, and after I slept on a friends memory foam mattress, that's what I knew I had to have. I was able to keep my waterbed frames and just drop in the mattress, without having to get a box spring. I researched the different companies and types of mattresses. BedinaBox provided what I was looking for at a price that couldn't be beat. When they came, my husband wasn't home, but I was able to unpack and set them up on my own. Memory foam mattresses can be warmer than regular mattresses, so I also bought the feather mattress pad. I highly recommend it. I was even able to recycle the great bag it came is as a BBQ cover.